smokey@daria /etc/courier-imap $ ping6 -c1 www.ipv6.digital.com
PING www.ipv6.digital.com(3ffe:1200:2001:1:8000::2) 56 data bytes
From 2001:41d0::210 icmp_seq=1 Destination unreachable: No route

--- www.ipv6.digital.com ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

smokey@daria /etc/courier-imap $ ping6 -c1 ngi.spawar.navy.mil
PING ngi.spawar.navy.mil(3ffe:f00:0:1:250:4ff:fe1b:903f) 56 data bytes
From 2001:41d0::210 icmp_seq=1 Destination unreachable: No route

--- ngi.spawar.navy.mil ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

smokey@daria /etc/courier-imap $ ping6 -c1 www.6bone.net
PING www.6bone.net(classical.hexago.com) 56 data bytes
64 bytes from classical.hexago.com: icmp_seq=1 ttl=57 time=264 ms

--- www.6bone.net ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 264.561/264.561/264.561/0.000 ms
smokey@daria /etc/courier-imap $ ping6 -c1 www.ipv6.taunusstein.net
PING www.ipv6.taunusstein.net(2a01:b0:101a::6) 56 data bytes
64 bytes from 2a01:b0:101a::6: icmp_seq=1 ttl=53 time=287 ms

--- www.ipv6.taunusstein.net ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 287.810/287.810/287.810/0.000 ms
smokey@daria /etc/courier-imap $ ping6 -c1 www.6bone.rnp.br
PING www.6bone.rnp.br(3ffe:2b00:1:101:204:acff:fee6:50b1) 56 data bytes
From 2001:41d0::210 icmp_seq=1 Destination unreachable: No route

--- www.6bone.rnp.br ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

smokey@daria /etc/courier-imap $ ping6 -c1 6bone.ipaccess.diveo.net.br
PING 6bone.ipaccess.diveo.net.br(3ffe:2b00:1003::1) 56 data bytes
From 2001:41d0::210 icmp_seq=1 Destination unreachable: No route

--- 6bone.ipaccess.diveo.net.br ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

smokey@daria /etc/courier-imap $ ping6 -c1 www.ipv6.net.edu.cn
PING www.ipv6.net.edu.cn(3ffe:3200::1:80) 56 data bytes
From 2001:41d0::210 icmp_seq=1 Destination unreachable: No route

--- www.ipv6.net.edu.cn ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

smokey@daria /etc/courier-imap $ ping6 -c1 ipv6.bits-pilani.ac.in
PING ipv6.bits-pilani.ac.in(2001:208:1:fd03::3) 56 data bytes
From 2001:208:1:fd03::1 icmp_seq=1 Destination unreachable: Address unreachable

--- ipv6.bits-pilani.ac.in ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

smokey@daria /etc/courier-imap $ ping6 -c1 www6.ipv6.polito.it
unknown host
smokey@daria /etc/courier-imap $ ping6 -c1 www.v6.linux.or.jp

PING www.v6.linux.or.jp(2002:d29d:9e19::ffff:2) 56 data bytes
64 bytes from 2002:d29d:9e19::ffff:2: icmp_seq=1 ttl=37 time=393 ms

--- www.v6.linux.or.jp ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 393.450/393.450/393.450/0.000 ms
smokey@daria /etc/courier-imap $ ping6 -c1 www.6bone.co.za 
PING www.6bone.co.za(2001:588:801:100::20) 56 data bytes
From 2001:41d0::210 icmp_seq=1 Destination unreachable: No route

--- www.6bone.co.za ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

smokey@daria /etc/courier-imap $ ping6 -c1 www.ipv6.sics.se
PING www.ipv6.sics.se(3ffe:200::2a0:24ff:fee1:7934) 56 data bytes
From 2001:41d0::210 icmp_seq=1 Destination unreachable: No route

--- www.ipv6.sics.se ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

smokey@daria /etc/courier-imap $ ping6 -c1 ipv6.sunny.ch
PING ipv6.sunny.ch(maus.cyberlink.ch) 56 data bytes
64 bytes from maus.cyberlink.ch: icmp_seq=1 ttl=54 time=36.0 ms

--- ipv6.sunny.ch ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 36.008/36.008/36.008/0.000 ms
smokey@daria /etc/courier-imap $ ping6 -c1 www.ipv6.org.uk 
PING www.ipv6.org.uk(seven.ecs.soton.ac.uk) 56 data bytes
From internal-router.6core.ecs.soton.ac.uk icmp_seq=1 Destination unreachable: Address unreachable

--- www.ipv6.org.uk ping statistics ---
1 packets transmitted, 0 received, +1 errors, 100% packet loss, time 0ms

smokey@daria /etc/courier-imap $